Does your car ever have "slow" days? - Toyota Yaris Forums

detroiter · 09-22-2009, 05:47 PM

Maybe it's my "butt dyno" or something but I swear some days it feels
like my Yaris drives nice and normal, then other days it feels like a dog
like it's dragging along, with a lack in performance like accelerating and such. Not sure if it's just me or something is going on :(

Kaotic Lazagna · 09-22-2009, 05:48 PM

Just the days I have to use my A/C. hehehe. I actually have days that are the opposite, when it feels like it has more power.

What kind of gas do you use (talking about brands)?

YAR1S · 09-22-2009, 06:06 PM

Sometimes I feel that way in my yaris aswell ....
weird.... maybe its gas like kaotic said.

advocate · 09-22-2009, 06:37 PM

Quote:

Originally Posted by Kaotic Lazagna

Just the days I have to use my A/C. hehehe. I actually have days that are the opposite, when it feels like it has more power.

What kind of gas do you use (talking about brands)?

Whichever one is the cheapest

detroiter · 09-22-2009, 06:38 PM

I usually use Shell and sometimes use BP, very rarely I'll use Mobil.

*tomato* · 09-22-2009, 06:57 PM

hmm, that's odd, I use the same gasoline (from Costco) and I feel like some days the Yaris has more pep.

no, it isn't...

it can't be ...

Are they ......

....

ALIVE?

detroiter · 09-22-2009, 08:19 PM

I'd say on it's "slow" days that it feels almost like it's being held back or restricted. Almost like if your driving a car and the cars exhaust is clogged up, feeling slow and sluggish as hell.

Bob Dog · 09-22-2009, 08:22 PM

Mine seems that way too. I'm just guessing but I suspect barometric pressure and, humidity and temperature affect sensor readings.

TheRealEnth · 09-22-2009, 09:10 PM

Well if you take it SUPER GRANNIE SLOW, in the warmup period, then it will act sluggish for a while, if u take it normal in the warmup period, it acts normal, if u take it hard in the warmupperiod... its bad for ur car but itll run hard..... thats the truth

Bob Dog · 09-22-2009, 09:11 PM

I noticed the same thing with moms X/a the cars seems to respond differently depending on the weather,I believe it may affect the sensor reading, and the ECU my respond slightly differently . I 'd put small money on it

Kaotic Lazagna · 09-22-2009, 09:18 PM

How is your driving style? If you hypermile like I do, try flooring it to near readline on the freeway on an onramp to flow of traffic.

Kaotic Lazagna · 09-22-2009, 09:19 PM

Quote:

Originally Posted by advocate

Whichever one is the cheapest

Ouch, not good. You could possibly foul up the injectors or spark plugs.

Lafiro · 09-22-2009, 09:59 PM

The answer is humidity. Then temperature. Then if the A/C is on.

Test it, next time its really foggy, or raining a lot, you wll notice immediately the car is slower. Same with warmer weather.

And of course the A/C when engaged uses around 20hp.

CtrlAltDefeat · 09-22-2009, 10:01 PM

Well I've noticed that my car reacts a lot to the air. On cool dry days (when the air is dense and has low humidity) it always seems to have a bit more pep, whereas hot humid days, it's a little slower...

CtrlAltDefeat · 09-22-2009, 10:03 PM

Quote:

Originally Posted by Lafiro

The answer is humidity. Then temperature. Then if the A/C is on.

Test it, next time its really foggy, or raining a lot, you wll notice immediately the car is slower. Same with warmer weather.

And of course the A/C when engaged uses around 20hp.

20hp? really? That seems like an awfully lot from our 106hp engines... I would think it'd be a little more noticeable then it is, if it's that much...

2009BBPliftback · 09-22-2009, 10:13 PM

I don't know about my car having slow days but I have those on occasion.

Lafiro · 09-22-2009, 10:14 PM

It really is around 20hp. OBDII reports just that on a live graph, tested it myself on the Yaris, and other cars, and the average was around 20hp for about any car I tested so far.

20hp is resonable, I mean its not like we are pressing down the gas pedal 100% to try and get up to 106crank horse power now are we?
no.

We probably use half the gas pedal, so the remaining power just goes to the a/c compressor. So the light foots don't feel it much, and the heavy feet people, will ALWAYS feel the difference in power. Plain and simple.

Edit:
No one take this the wrong way, I spoke to a few good friends of mine, and they told me whoever says the a/c compressor doesn't slow down the car, and that whoever says, the a/c compressor doesn't change numbers when running a dyno is a retard.
I happen to believe them, and Im sick of people trying to disagree with the TRUTH as if its something that makes them happy.

Now don't lash at me for being honest, because if you think of it, its ALL true.

YAR1S · 09-22-2009, 10:25 PM

Quote:

Originally Posted by 2009BBPliftback

I don't know about my car having slow days but I have those on occasion.

09-22-2009, 05:47 PM	#1
detroiter Drives: 2008 Polar White LB Auto Join Date: Oct 2008 Location: Metro Detroit Posts: 1,238	Does your car ever have "slow" days? Maybe it's my "butt dyno" or something but I swear some days it feels like my Yaris drives nice and normal, then other days it feels like a dog like it's dragging along, with a lack in performance like accelerating and such. Not sure if it's just me or something is going on :(

09-22-2009, 06:57 PM	#6
tomato Super Moderator View User's Garage Drives: Yaris 2DR LB 07, MT, Abs. Red Join Date: Feb 2009 Location: San Francisco Bay Area Posts: 5,155	hmm, that's odd, I use the same gasoline (from Costco) and I feel like some days the Yaris has more pep. no, it isn't... it can't be ... Are they ...... .... ALIVE? __________________ Follow Bamboo the YarisWorld Traveler here

09-22-2009, 09:10 PM	#9
TheRealEnth Beast View User's Garage Drives: 2007 Blz Blu LB Join Date: Oct 2008 Location: Miami, FL Posts: 1,365	Well if you take it SUPER GRANNIE SLOW, in the warmup period, then it will act sluggish for a while, if u take it normal in the warmup period, it acts normal, if u take it hard in the warmupperiod... its bad for ur car but itll run hard..... thats the truth __________________ One you've taken a yaris for a spin, there's no turning back. Its a Chao!!!

09-22-2009, 10:01 PM	#14
CtrlAltDefeat I ♥ Yaris View User's Garage Drives: Black 08 LB MT & red 97 Miata Join Date: Oct 2008 Location: Indianapolis IN Posts: 1,313	Well I've noticed that my car reacts a lot to the air. On cool dry days (when the air is dense and has low humidity) it always seems to have a bit more pep, whereas hot humid days, it's a little slower... __________________ The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt. - Bertrand Russell

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Jerkratt - Photo Scavenger Hunt	Jerkratt	Photo-Video-Media Gallery	3	03-04-2009 09:03 AM
Photo Scavenger Hunt Ideas Thread	Black Yaris	Photo-Video-Media Gallery	41	02-28-2009 08:54 PM

09-22-2009, 05:48 PM	#2
Kaotic Lazagna View User's Garage Drives: '14 GT86, '08 Vitz Join Date: Dec 2006 Location: Central Valley, CA Posts: 9,873	Just the days I have to use my A/C. hehehe. I actually have days that are the opposite, when it feels like it has more power. What kind of gas do you use (talking about brands)?

09-22-2009, 06:38 PM	#5
detroiter Drives: 2008 Polar White LB Auto Join Date: Oct 2008 Location: Metro Detroit Posts: 1,238	I usually use Shell and sometimes use BP, very rarely I'll use Mobil.

09-22-2009, 08:19 PM	#7
detroiter Drives: 2008 Polar White LB Auto Join Date: Oct 2008 Location: Metro Detroit Posts: 1,238	I'd say on it's "slow" days that it feels almost like it's being held back or restricted. Almost like if your driving a car and the cars exhaust is clogged up, feeling slow and sluggish as hell.

09-22-2009, 08:22 PM	#8
Bob Dog DARK PHASE OF THE MOON Drives: 07 liftback Join Date: Apr 2009 Location: the Boondocks, NC Posts: 993	Mine seems that way too. I'm just guessing but I suspect barometric pressure and, humidity and temperature affect sensor readings.

09-22-2009, 09:11 PM	#10
Bob Dog DARK PHASE OF THE MOON Drives: 07 liftback Join Date: Apr 2009 Location: the Boondocks, NC Posts: 993	I noticed the same thing with moms X/a the cars seems to respond differently depending on the weather,I believe it may affect the sensor reading, and the ECU my respond slightly differently . I 'd put small money on it

09-22-2009, 09:18 PM	#11
Kaotic Lazagna View User's Garage Drives: '14 GT86, '08 Vitz Join Date: Dec 2006 Location: Central Valley, CA Posts: 9,873	How is your driving style? If you hypermile like I do, try flooring it to near readline on the freeway on an onramp to flow of traffic.

09-22-2009, 09:59 PM	#13
Lafiro Drives: 06 Yaris Sedan Join Date: Jun 2006 Location: NYC Posts: 694	The answer is humidity. Then temperature. Then if the A/C is on. Test it, next time its really foggy, or raining a lot, you wll notice immediately the car is slower. Same with warmer weather. And of course the A/C when engaged uses around 20hp.

09-22-2009, 10:13 PM	#16
2009BBPliftback Drives: 2009 Yaris LB in Blazing blue Join Date: May 2009 Location: Western PA (Franklin) Posts: 237	I don't know about my car having slow days but I have those on occasion.

09-22-2009, 10:14 PM	#17
Lafiro Drives: 06 Yaris Sedan Join Date: Jun 2006 Location: NYC Posts: 694	It really is around 20hp. OBDII reports just that on a live graph, tested it myself on the Yaris, and other cars, and the average was around 20hp for about any car I tested so far. 20hp is resonable, I mean its not like we are pressing down the gas pedal 100% to try and get up to 106crank horse power now are we? no. We probably use half the gas pedal, so the remaining power just goes to the a/c compressor. So the light foots don't feel it much, and the heavy feet people, will ALWAYS feel the difference in power. Plain and simple. Edit: No one take this the wrong way, I spoke to a few good friends of mine, and they told me whoever says the a/c compressor doesn't slow down the car, and that whoever says, the a/c compressor doesn't change numbers when running a dyno is a retard. I happen to believe them, and Im sick of people trying to disagree with the TRUTH as if its something that makes them happy. Now don't lash at me for being honest, because if you think of it, its ALL true.